Valve lock



Dec. 30, 1930. PANG R i,787,401

VALVE LOCK Filed March 19, 1929 76 I? ly-6 8 2 a 7 WW 26 27 2? Z! 2 /3 1mm, 2 23 7 Samuel s pa yz Patented Dec. 30, 1930' PATENT OFFICE SAMUEL SPANGLER, OF GLENAL'UM, WEST VIRGINIA VALVE LOCK Application filed March 19, 1929.- Serial No. 348,287.

This invention relates to valve locks and has particular adaptation with a liquid supply pipe line. i Oneof the objects of the invention is to pro- 1 5'vide, in a manner as hereinafter set forth,

for. preventing unauthorized persons from withdrawing the liquid from the pipe line and is particularly applicable to'preventing theft of automobiles wherein the lock is inserted in the gasoline line.

Further objects of the invention are to provide, in a manner as hereinafter set forth, a lock of the character described, which is strong, compact and durable, highly efficient for its intended purpose, thoroughly reliable inits operation, easily attachable to standard parts, very simple in its assembly. and comparativelyinexpensive to manufacture and install.

,With the foregoing and other objects in view the invention consists of a novel construction, combination and arrangement of parts, as hereinafter will be more specifically, described andillustrated in the accompanying drawings, wherein an embodiment of the invention is disclosed but it is to be understood that changes, variations and modifications may be resorted to without departing from the spirit of the claims hereunto appended. v I

In the drawings wherein like reference denote corresponding parts throughout the several views:

' Figure 1 is a side elevation of the device in accordance with this invention,

. Figure 2 is a vertical, central detailed sectional view,

Figure 3 is a horizontal, detailed sectional view taken substantially on line 33 of Figure 2, and looking in the direction of the arrows,

Figure 4 is a fragmentary diametric, detailed sectional view of the bushing and lock in accordance with this invention,

Figure 5 is a fragmentary horizontal section through the valve casing and valve stem showing the parts in locked position with the key removed, and

Figure 6 is a view similar to Figure 5,

showing the position of the parts in unlocked position.

Referring to the drawings in detail, wherein is disclosed an embodiment of the invention, 5 indicates .a substantially cylindrical valve casing, the bottom of which merges into a longitudinally extending tubular portion 6 having a longitudinal passage 7 extending entirely through the tubular portion 6. It is pointed out that the outer surface of the tubular portion 6 may be formed of polygonal contour as will be understood by reference to Figure l of the drawings.

The opposite ends of the longitudinal passage 7 may be threaded as at 8, 9 to which are connected the opposed ends 10, 11 of a liquid Supply pipe such as gasoline, water or the The casing 5 and tubular portion 6 are formed with a circular opening 12 which extends entirely through both members in a transverse direction, the lower end of which communicates with a circular cavity 13 formed on the bottom of the tubular portion 6.

The cavity 13 is of greater diameter than the continuous opening 12. Rotatably mounted in the continuous circular cavity 12 is a valve stem 14:, the lower end of which projects into the cavity 13, and the upper end of thesa-id valve stem projects above the upper face of the casing and is formed with an annular turning cap 15 formed integral therewith.

A slot 16 extends diametrically through the valve stem 14 from the upper end thereof to a point near the passage 7 and is adapted for slidably receiving a key 17? and communicating with the slot 16 are a plurality of grooves of segmental configuration, axially position to A cylindrical bushing lock 20 is adapted to be seated in the cavity 13 at the lower ta'c'e of the tubular member 6 and is provided with a circular cavlt'y 21 extending-inwardly for a portion of its length. The lowereend.

of the valve stem 14 is adapted to be confined Within the socket 21 and adjacent the lower end of said valve stem it is formed with an annular groove 22 which reg1sters1w1th the inner end of an inverted T-shaped slot 23 'wnich'is formed in the walls of the bushing lock adjacent the cavity 21. V I There are fouroi the inverted T-shaped slots 23 disposed about the walls or" the bushing lock 20, ninety degrees apart as will he clearly understood by reference to Figure 3 of'the drawing. Seated 1n the inverted T- 's'haped slots 23 are inverted ll-shaped. clamps 24 the apex of which 'norm'allyproj ec ts above the inner face of the "bushing slot 20. Intermediate the ends of the side walls of the cavity 13 there are iorniedfour inwardly directed pockets 25 adapted to register with the inverted T-shaped slot 23' on the bushing lock 20 for the purposes to be presently set forth. 1 V i. 7 Near the lowerend of the'valve stem .14 it formed with acircular opening 26 which extends diametrically therethroughf The opening is disposed on the valve stem so as to register with the passage 7 extending through the tubular portion 6 soas to form a continuous. passage therethrough when the valve is open, while at thesame time to present the solid walls of the 'valve'stem across the opening to form abutments with respect thereto when the valve is closed.

in the application of thefloc'k,'in accord ance with this invention, and in the assembly of the same, the valve stem is inserted through the central opening 12 and the'bushing 20 is lockedintoposition by forcing the apex or" each member 24 into abutmentwith the inner wall of the cavity 13, the action of which 22 and the pocket 25 respectively whereby the. valve and the bushing 20 are locked in prevent longitudinal movement thereof. v

In locked position, with the keyl'? removedas shown in Figure 5 of the. drawings, the pins 18 extend through slots 17 into of registration with the diametric slot 16, out these pins 18'are still projected into the V segmental slots 17. In this latter position,

*as shown in Figure 2,the valve stem is free to turn, and since these segmental slots 17 extend around a quadrant of the circumterence of the valve stem, the said valve stem is permitted to turn 90 to bring the opening 26 into registration with the passage 7. The position of the pins 18 in the slots 17, when the valve is opened, is clearly shown in Figure -6 of the drawings.

- Having thus described my invention, what I claim as new is:

1; "In a valve "lock 'otthe character described, comprising a valve casing formed with a continuous passage therethrough, said casin-ggb'eing formedgwith a bore extending through the casing and across the passage, said casing" also being-formed with a recess communicating with one end of the b orep'a cap bushing seated in said recessand having a socket fthere'in registering withlsaid one' end-of the bore, a valve stem having an opening for selective registration Withsaid passage, said valve stem being rotatable in the bore and having one end'rotata'ble in said socket, said valve stem being formed with a circumferential groove on that portion seated in said socket, expansible 7 keys mounted in said cap bushing having one endof each engaging with said peripheral groove, and the other end of each engage able-with the walls of the recess for locking the 'valve stem against longitudinal movement,- the said valve s'terns being-formed with a diametrickey way throughaporti'on of its length and also being formed- -with peripheral slots communicating with said key way, slidable pins mounted in the casing and projecting through said-slots into said key way, anda key inserta'blejin the key way for moving the pins in one direction.

2. In a valve lock of the character dowith a-continuous passage therethrough, said casing being formed witha hore extending through the casing and across the passage, said casing also being formed with a recess communicating with one end of the bore,'a cap bushing seatedi-n said recess and having a socket therein registering with said one end of the bore, a'va'lve stein having an opening for selective registration with said passage, "said valve stem being rotatable in scribed, ;comprising a valve casing formed 1 thebore and having one end rotatable in a said socket, said valve stem being formed with a clrcumferential-groove on that portion seated in 'saidsocket, expansible keys 1 mounted in said cap bushing having oneend of :each engaging with said peripheral groove, and the. other end of each engage able with the walls of the recess for locking the valve-stein againstlongitudinal rmove l "merit, the, said valve stembeing formed with a diametric :key way "through "a portion of its length and, also being formed with peripheral "slots communicating with said 

